Southeastern Electric Coop Inc - (OK)
Cooperative electric utility · Oklahoma · #808 of 3,199 U.S. utilities by customers · EIA utility #17603
Southeastern Electric Coop Inc - (OK) is a cooperative electric utility serving 17,550 customers in Oklahoma. In 2025 it sold 438 gigawatt-hours of electricity for $44.30M in revenue, an average realized rate of 10.11¢ per kWh across all customer classes and 12.29¢ per kWh for residential customers. Its reported service territory covers 5 counties. EIA records its activities as: distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 15,575 | 228 | $28.02M | 12.29¢ | |
| Commercial | 1,965 | 43.1 | $5.53M | 12.82¢ | |
| Industrial | 10 | 167 | $10.75M | 6.43¢ | |
| Total | 17,550 | 438 | $44.30M | 10.11¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (1,220 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 15,896 | 404 | $39.80M | 12.04¢ |
| 2022 | 16,594 | 423 | $44.67M | 12.69¢ |
| 2023 | 16,981 | 434 | $40.37M | 11.68¢ |
| 2024 | 17,218 | 454 | $35.83M | 9.09¢ |
| 2025 | 17,550 | 438 | $44.30M | 12.29¢ |
Reliability (2025)
Average outage time (SAIDI): 398 minutes per customer per year
Average outages (SAIFI): 2.14 per customer
Average restoration time (CAIDI): 186 minutes
As reported for Oklahoma under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 455 GWh
Winter peak demand: 126 MW
Energy losses: 3.6% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 17,476 meters
Counties served
Atoka, OKBryan, OKChoctaw, OKCoal, OKJohnston, OK
Other large utilities in Oklahoma
- Oklahoma Gas & Electric Co - 909,620 customers, residential 12.43¢
- Public Service Co of Oklahoma - 588,941 customers, residential 14.23¢
- Oklahoma Electric Coop Inc - 65,196 customers, residential 12.87¢
- City of Edmond - (OK) - 44,881 customers, residential 10.73¢
- Northeast Oklahoma Electric Co - 42,301 customers, residential 13.79¢
- Verdigris Valley Elec Coop Inc - 39,439 customers, residential 12.40¢
- East Central Oklahoma Elec Coop Inc - 37,718 customers, residential 13.59¢
- Tri-County Electric Coop, Inc (OK) - 31,996 customers, residential 15.95¢
All Oklahoma utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #17603 in the EIA frame.